2.4.1 Preparation

2.4.2 Special Attention

2.4.3 Installation

2.4.4 Application

2.4.4.1 Unfloored Attics

2.4.4.2 Floored Attics

2.4.4.3 Attic Knee Walls and Slopes

2.4.4.4 Attic Stairways, Scuttles and Pull-Down Stairs